Constructive crit.
I put forth a lot of effort into everything that I do. I do my best in any and everything. When I set goals for myself, I do everything in my power to achieve them and if I happen to fall short of my goal then I pride myself in knowing that I did my best.
You've restated yourself 3 times. You need to illustrate this point somehow with an experience or something. What is a goal you have set and strived for? Use something from your other application materials so we can investigate it a little.
I've actually stopped reading half way through because you have used the term "goals" in every single sentence without advancing the conversation. This illustrates that you don't have a goal here.
Rewrite this is a personal example that illustrates your devotion to completing goals and objectives. Don't tell me you like to complete goals, because I don't believe summations. Illustrate it. I don't want to promote this, but if you're lying, that's ok if you can be creative and support something that sounds passionately real. I don't want to promote lying. You should not do that. What I'm saying is, fictional characters in fictional stories can show me these characteristics through their adventure. You, as a real person, aren't doing that here...
Rewrite.